i think that will be a purrfowe moment for mitt romney. >> reporter: they're preparing for romney to come armed. >> they've been practicing zingers for months. >> reporter: abc news political analyst, matt dowd says at this point, romney and obama advisers are style over substance. >> the debates that have changed people's mind are about physical characteristics and mannerisms in the modernage and not substance of policy issues. >> reporter: both have challenges, the president needs to keep his answers short to avoid sounding like the professor heas before the white house. romney must come across relatable and really connect with voters. karen travers, abc news, washington. >> hmm. >> all right. >> talking about the whole style not substance. style? >> style is important. and particularly just likability, what people feel like they, they feel lik they have a comfort zone with you. it's important. >> i don't think any body has prepared more so than mitt romney. expecting 50 million to 60 million eyeballs. >> how many zingers stuffed in their coat. got the zinger. bang. >> pull it out,